lovett



(No Model.) 2 Sheets-Sheet 1.

' J. S. H. LOVETT.

POTTERY PRESS.

No. 329,060. Patented Oct. 27, 1885.

.Y i?? m G l C C ZUL'ZeSSeS: Ewa/mz C70 Lgf/J, 0 c y. 4?. (g/ A Himff'm/WM N. PETERS, PhciLhngrnnhar. Washington, D. l:A

' POTTERY PRESS.

No. 329,060, Patented, out. 27,1885.

N4 Pinzas, mamomph", wmmgmn, .c.

UNITED STATES PATENT OFFICE.,

JOSEPH S. H. LOVETT, OF TRENTON, NEW JERSEY.

POTTERY-PRESS.

SPECIFICATION forming part of Letters Patent No. 329,060, dated October27, 1885.

(No model.)

To all whom it may concern:

Be it known that l, JOSEPH S. II. Lovnrr, of the city of Trenton, countyof Mercer, State of New Jersey, have inventedA a certain` new and usefulImprovement in Pottery-Presses, of which the following is aspecification.

The object of my invention is to provide a press which can be operatedby a belt running from any ordinary shafting in a factory, and by meansof the continuons motion imparted by such belt to secure a heavypressure of the die upon the article to be pressed,such die, with itsattendant mechanism, being capable of a sudden retraction as soon as thearticleis formed.

The machinery by which I accomplish these objects is shown in theaccompanying drawings.

In these drawings similar parts are indicated by similar letters ofreference.

Figure 1 shows a front view of my machine. Fig. 2 shows a side view ofthe same. Fig. 3 shows a section at x w of` Fig. 2. Fig. 4 is a sideview in detail of the pressing part of the machine, omitting, for thesake of clearness, some of the details shown in the other drawings; andFig. 5 shows details in side view of such pressing parts omitted to beshown in Fig. 4.

In Fig. 1,A is the base of the machine. In this base, at the opening A',(indicated by the dotted lines,) is an opening, in which is placed valower die operated by any appropriate means. As this die and its meansof operation are old features in presses, I have not shown them in thedrawings. From the base A rise the posts or frame B B. To these postsare attached the slides B. Sliding freely up and down these slides B bygrooves in its ends is the head-block G. From this head-block risesstandards C G', firmly attached thereto and connected at the top by thecross-piece C. Near the top of the posts B is placed a shaft, D, turningfreely in journals attached to the posts. Upon this shaft is placed aneccentric, E. This eccentric is connected by means of collar E and arm Ewith the cross-piece C. A side view of this eccentric, collar, and armis shown at Fig. 5. At the end of the shaftD is placed the balance-leverF. It will be seen that toraise or lower the lever F will raise or lowerthe head-block C, with all the machinery it carries. From the head-blockO rises other standards, H. Side views of these standards are shown atFigs. 4 and 5. These standards H carry another shaft, I. (Shown at Fig.4.) Upon this shaft I is an eccentric, K. This eccentricis provided withthe collar K and col lar-armK. Thiscollanarm is connected with theplunger L, which passes through asquare opening in the head-block C. Atthe base of this plunger, as indicated by the dotted lines, is a recessto receive theupper die. Upon the shaft I is firmly fixed a gear-wheel,M. This gear-wheel meshes into the endless screw N. (Shown behind thestandard B in Fig. 1, and shown more clearly in Fig. 2.) This endlessscrew moves freely up and down on a shaft, O, but is compelled to turnwith the shaft O because of a feather, O', upon the shaft, which featherfits into a corresponding cut in the screw. A transverse section of thescrew showing suchvcut is shown at Fig. 3. To the upper part of theshaft O are attached the variable speed-pulleys l?, around which theband from the shafting passes when the Inachine is in action. i

The operation of the machine is as follows: Upon power being applied tothe pulleys P the shaft O rotates, carrying with it the screw N. Thisscrew rotates the wheel M, shaft I, and eccentric K. The rotation of theeccentric K carries down the plunger L, and the plate or other articleto be pressed, placed between the dies I and A', receives a strongpressure. As soon as the pressure is completed,the lever F is raised,carrying upward with it the blank C, plunger L, and all their attendantmachinery, and the screw N slides upward on the shaft O, carried by thearm G.

To make my machine more perfectly auto-` matic, I have provided itfurther with the mechanism shown more fully at Fig. 2. To the bottom ofthe shaft O, I attach a gearwheel, It, which meshes into anothergearwheel, S. This wheel S moves freely upon a pivot on top of thesupport T. Upon the top of the gear-wheel S is placed a cam, S. Upon thetop of this cam is placed asmall wheel, U, moving freely in the end ofthe pitman W.

'This pitman connects with a spur-wheel, X,

which meshes with another spurwheel, Y, fixed firmly to the shaft D.

In operation the rotation of the shaft O carries with it the wheel R.The wheel Brotates the wheel S. 'Ihe cam S', carried by the wheel S, isso adj usted that the moment the dies have exerted their full pressurethe; rotation of the cam raises the pitman WV, rotates the wheels X andY, the shaft D, and eccentric E, and thus raises the block 0, plunger L,and attendant machinery.

In addition to the advantages already inentioned which I secure by mymachinery, I secure a slow continuous downward pressure, thus moreperfectly excluding the air from the clay composing the article formed,and I also secure a rapid retraction of the pressing parts the momentthe pressing is completed, thus economizing time and securing a morerapid working of the machine.

What I claim as my invention is- 1. The head-block C, with standards H,in combination with the shaft I, provided with the eccentric K andplunger L, substantially as Shown and described.

2. The head-block C, with standards C and cross-piece C", in combinationwith the eccentric, E, arranged and combined substantially as shown anddescribed.l Y

3. The head-block G, with its standards H H and C' G', in combinationwith the eccentric K, the plunger L, connected with such eccentric, andthe eccentric E, connected with the standards C' C', all substantiallyas shown and described.

shaft D, and balance-lever F, substantially as shown and described.

6. The shaft O, provided with the feather O', and carrying the screw N,in combination with the gear-wheel R and S, cam S', arm W, gear-Wheels Xand Y, and shaft D, substantially as shown and described. Y

7. The shaft O, provided with pulleys P, carrying the screw N and havingthe gearwheel It, in combination with the wheel S, cam S', arm Wprovided withwheel U, wheels X and Y, and shaft D, and with thegear-wheel M, shaft I, eccentric K, collar K', collar-arm K", andplunger L.

8. The shaft O, provided with pulleys P, carrying the screw N and havingthe gearwheel R, in combination with the wheel S, cam S', arm W,provided with wheel U, wheels X and Y, and shaft D, carrying theeccentric E, connected by collar E and collar-arm E" with cross-pieceC", and gear-wheel M, shaft I, ec-

centric K, collar K', collar-arm K", and plunger L, all substantially asshown and described.

JOSEPH s. H. LovErT.

